code: def setUp(self):
      self.check_forward_options = {}
      self.check_backward_options = {}
      if self.dtype == numpy.float16:
          self.check_forward_options = {"atol": 5e-4, "rtol": 5e-3}
          self.check_backward_options = {
              "atol": 2**-4,
              "rtol": 2**-4,
          }
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_tile.py
imports: import unittest
  import numpy
  from chainer import functions
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestTile obj's underlying member method code with example usage: obj.setUp() without return types